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Agritech Archive

Production · Protection · Nutrients · Water
In here
1,513 crop protection pages, pest and disease by crop•98 crops tagged — rice, cotton, sugarcane, mango and more•261 nutrient management pages, deficiency symptoms and correction measures•3,462 data tables preserved from the source pages

Symptom of Damage

Cotton
Thrips: Thrips tabaci
Symptom of Damage Leaf laceration under the under surface of leaves. Silvery or brown necrotic spots of 3-5 mm. Leaf wrinkling and upward curling. Distorted leaves with white shiny patches. Identification Characters and Biology Destructive stage: Nymphs and adults. Eggs: Minute, kidney shaped laid in slits in leaf tissues. Egg period: 5 days. Nymphs - Very minute, slender, yellowish and microscopic Adult - Small, slender, yellowish to brown with fringed wings
Integrated Management ETL : 50 nymphs or adults / 50 leaves Avoid planting of cotton near onion fields to prevent the migration of thrips Avoid late sowing. Treat seeds with Beauveria bassiana @ 10 g/kg. Apply nitrogenous fertilizers judiciously Spray any one of the following insecticides when pest population reaches ETL: Imidacloprid 17.8% SL 40 – 50 ml/acre or Buprofezin 25%SC 400 ml/acre or Diafenthiuron 50%WP 240 g/acre or Thiacloprid 21.7%SC 40-50 ml/acre or Flonicamid 50% WG 60 g/acre or Thiamethoxam 25% WG 40 g/acre or Fipronil5% SC 600-800 ml/acre.
  • Leaf laceration under the under surface of leaves.
  • Silvery or brown necrotic spots of 3-5 mm.
  • Leaf wrinkling and upward curling.
  • Distorted leaves with white shiny patches.

Identification Characters and Biology

  • Destructive stage: Nymphs and adults.
  • Eggs: Minute, kidney shaped laid in slits in leaf tissues. Egg period: 5 days.
  • Nymphs - Very minute, slender, yellowish and microscopic
  • Adult - Small, slender, yellowish to brown with fringed wings

Integrated Management

  • ETL : 50 nymphs or adults / 50 leaves
  • Avoid planting of cotton near onion fields to prevent the migration of thrips
  • Avoid late sowing.
  • Treat seeds with Beauveria bassiana @ 10 g/kg.
  • Apply nitrogenous fertilizers judiciously
  • Spray any one of the following insecticides when pest population reaches ETL: Imidacloprid 17.8% SL 40 – 50 ml/acre or Buprofezin 25%SC 400 ml/acre or Diafenthiuron 50%WP 240 g/acre or Thiacloprid 21.7%SC 40-50 ml/acre or Flonicamid 50% WG 60 g/acre or Thiamethoxam 25% WG 40 g/acre or Fipronil5% SC 600-800 ml/acre.